Today is the day that the software company, that shall not be named, releases their new operating system. This is supposed to be an upgrade from Vista (wasn't that a great platform introduction, NOT). End of Rant :o)
The new release is supposed to be less needy, only alerts you to really important stuff, and is faster than Vista (like that is hard to accomplish :o).
There are other upgrades, including Media Player now accommodating iTunes AAC format, but some missing things also (Windows Mail, Photo Gallery, and Movie Maker). So, use your existing ISP mail system and give Google Picasa a try.
Upgrades are $120, or $150 for a 3-PC Family Pac. Most likely there will be specials and discounts as well.
The real question is, Should I Upgrade??? Of course the answer is, it depends :o) If you find Vista sluggish and you plan on keeping your computational device for at least two years, then it most likely makes sense. If you use Windows XP, I say just bite the bullet and buy an new computer with W7 preinstalled.
Bottom line, if you currently run Vista, W7 will most likely work better, so are those extra 45 seconds [disclaimer: joke, no technical basis] in your day worth the upgrade, that is up to you.